Self-maintenance lightning arrester grounding device

Abstract

The invention discloses a self-maintenance lightning arrester grounding device. The self-maintenance lightning arrester grounding device comprises a grounding rod inserted into the ground surface, a capacitor plate, an electromagnetic relay and a grounding piece, wherein the grounding rod, the capacitor plate, the electromagnetic relay and the grounding piece are sequentially connected to one circuit in series, and the grounding piece is grounded; a rust removal device is arranged at the part, inserted into the ground surface, of the grounding rod; the rust removal device comprises an electromagnet and a plurality of annular scraping groups; each annular scraping group comprises an annular permanent magnet and a first scraping ring; and the first scraping ring is glued and fixed on the inner ring of the corresponding annular permanent magnet. The device has the advantages that during thunder and lightning weather, a lightning rod electrically connected with the grounding rod performs point discharge in the cloud layer to enable the grounding rod to have positive charges, and when an oxidation layer outside the grounding rod is more required to be maintained, the electromagnetic relay works for a short time after the capacitor plate is broken down, and the short-time working of the electromagnetic relay drives the rust removal device to remove the oxidation layer of the grounding rod, so that the purpose of free maintenance of the grounding rod is achieved.

Description

technical field [0001] The invention relates to the technical field of power facilities, in particular to a grounding device for a self-maintaining lightning arrester. Background technique [0002] For the current lightning arrester grounding device, a fixed metal rod is generally used, generally made of copper rod, iron rod or alloy rod, which is directly inserted into the ground, and its upper end is connected to the lightning arrester. Due to the harsh underground environment, it is easy to oxidize the surface of the grounding rod and increase the grounding resistance. If this problem is not dealt with in time, the arrester will not be able to protect the electrical equipment normally when a lightning strike occurs. However, the current grounding rod is basically just a fixed homogeneous metal rod. After oxidation, it must be pulled out for repair, or directly replaced with a new grounding rod, and the maintenance cost is relatively high. [0003] After searching, the Ch...

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Problems solved by technology

[0004] The above-mentioned authorization documents put forward a good solution to the problem of lightning striking the lightning arrester, but in real life, more lightning rods do not produce lightning protection effects by attracting lightning to the lightning rod, but by keeping the lightning rod connected to the ground in the cloud layer The medium tip discharges, and then neutralizes the charge in the air to produce a lightning protection effect, so the above authorization documents cannot be well applied to more lightning arresters in existing life

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